12345678910111213141516171819202122232425262728293031

import nacl from 'https://esm.sh/tweetnacl@1.0.3';
import { randomAsU8a } from '../random/asU8a.ts';
interface Sealed {  sealed: Uint8Array;  nonce: Uint8Array;}
/** * @name naclSeal * @summary Seals a message using the sender's encrypting secretKey, receiver's public key, and nonce * @description * Returns an encrypted message which can be open only by receiver's secretKey. If the `nonce` was not supplied, a random value is generated. * @example * <BR> * * ```javascript * import { naclSeal } from 'https://deno.land/x/polkadot@0.2.33/util-crypto/mod.ts'; * * naclSeal([...], [...], [...], [...]); // => [...] * ``` */export function naclSeal (message: Uint8Array, senderBoxSecret: Uint8Array, receiverBoxPublic: Uint8Array, nonce: Uint8Array = randomAsU8a(24)): Sealed {  return {    nonce,    sealed: nacl.box(message, nonce, receiverBoxPublic, senderBoxSecret)  };}